Figure 2From: Dynamics and bifurcation analysis of a state-dependent impulsive SIS model(A) The semi-trivial periodic solution is globally stable. (B) There exists an unstable positive order-1 periodic solution, and the semi-trivial periodic solution and the positive equilibrium \(E^{*}\) are bistable. The other parameters are fixed as follows: \(\beta =0.8\), \(A=7\), \(d=0.7\), \(v=4\), \(c=2.5\), \(\theta =0.1\), \(b=1\), \(q=,0.22\)Back to article page